Temperature instabilities

[evadelmas]

This PR introduces a new way of scaling the biological rates through the model_parameters function's keyword

• scale_growth : (default to false) if set to true, normalize growth rates by the growth rate of the smallest producer
• scale_metabolism : (default to false) if set to true, normalize metabolic rates by the growth rate of the smallest producer
• scale_maxcons : (default to false) if set to true, normalize maximum consumption rates by the metabolis rates
  This should stabilize systems with temperature dependence (Instability detected when using temperature dependence on consumption rates #74)

[codecov]

Codecov Report

Merging #81 into next will decrease coverage by 0.76%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##             next      #81      +/-   ##
==========================================
- Coverage   87.88%   87.11%   -0.77%     
==========================================
  Files          15       15              
  Lines         883      885       +2     
==========================================
- Hits          776      771       -5     
- Misses        107      114       +7

Impacted Files	Coverage Δ
src/make_parameters.jl	98.49% <100%> (+0.02%)	⬆️
src/dBdt.jl	100% <100%> (ø)	⬆️
src/simulate.jl	82.5% <0%> (-17.5%)	⬇️

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[coveralls]

Coverage increased (+0.03%) to 87.119% when pulling f662c54 on temperature_instabilities into 5a6a00d on next.